预拌混凝土本身是一种半成品,出厂之后混凝土各方面性能是否满足设计要求,需要达到一定的龄期之后进行判断。但混凝土质量出现异常,会首先反映在拌合物的性能上。本文通过工程中实例、以及部分对比试验,浅谈当拌合物出现泌水、离析时对混凝土强度、耐久性及施工质量的危害。 Ready-mixed concrete itself is a semi-finished products, concrete after delivery all aspects of the performance of the design requirements to meet the need to reach a certain age after judgment. However, the quality of concrete abnormalities, will first be reflected in the performance of the mixture. This article through the project examples, as well as some comparative tests, when the mixture bleeding, segregation of concrete strength, durability and construction quality hazards.